WIP: Objective-C bridge

Sources/ObjectiveC/CSCoreStore.swift

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+//
+//  CSCoreStore.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - CSCoreStore
+
+/**
+ The `CSCoreStore` serves as the Objective-C bridging type for `CoreStore`.
+ */
+@objc
+public final class CSCoreStore: NSObject {
+    
+    /**
+     The default `CSDataStack` instance to be used. If `defaultStack` is not set before the first time accessed, a default-configured `DataStack` will be created.
+     
+     Changing the `defaultStack` is thread safe, but it is recommended to setup `DataStacks` on a common queue (e.g. the main queue).
+     */
+    @objc
+    public class var defaultStack: CSDataStack {
+        
+        get {
+            
+            return CoreStore.defaultStack.objc
+        }
+        set {
+            
+            CoreStore.defaultStack = newValue.swift
+        }
+    }
+    
+    
+    // MARK: Private
+    
+    private override init() {
+        
+        fatalError()
+    }
+}

Sources/ObjectiveC/CSDataStack.swift

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+//
+//  CSDataStack.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - DataStack
+
+extension DataStack: CoreStoreBridgeable {
+    
+    // MARK: CoreStoreBridgeable
+    
+    public typealias NativeType = CSDataStack
+}
+
+
+// MARK: - CSDataStack
+
+/**
+ The `CSDataStack` serves as the Objective-C bridging type for `DataStack`.
+ */
+@objc
+public final class CSDataStack: NSObject, CoreStoreBridge {
+    
+    /**
+     Initializes a `CSDataStack` with default settings. CoreStore searches for <CFBundleName>.xcdatamodeld from the main `NSBundle` and loads an `NSManagedObjectModel` from it. An assertion is raised if the model could not be found.
+     */
+    @objc
+    public convenience override init() {
+        
+        self.init(DataStack())
+    }
+    
+    /**
+     Initializes a `CSDataStack` from the model with the specified `modelName` in the specified `bundle`.
+     
+     - parameter modelName: the name of the (.xcdatamodeld) model file. If not specified, the application name (CFBundleName) will be used if it exists, or "CoreData" if it the bundle name was not set.
+     - parameter bundle: an optional bundle to load models from. If not specified, the main bundle will be used.
+     - parameter versionChain: the version strings that indicate the sequence of model versions to be used as the order for progressive migrations. If not specified, will default to a non-migrating data stack.
+     */
+    @objc
+    public convenience init(modelName: String = DataStack.applicationName, bundle: NSBundle = NSBundle.mainBundle(), versionChain: [String]? = nil) {
+        
+        self.init(
+            DataStack(
+                modelName: modelName,
+                bundle: bundle,
+                migrationChain: versionChain.flatMap { MigrationChain($0) } ?? nil
+            )
+        )
+    }
+    
+    /**
+     Initializes a `CSDataStack` from the model with the specified `modelName` in the specified `bundle`.
+     
+     - parameter modelName: the name of the (.xcdatamodeld) model file. If not specified, the application name (CFBundleName) will be used if it exists, or "CoreData" if it the bundle name was not set.
+     - parameter bundle: an optional bundle to load models from. If not specified, the main bundle will be used.
+     - parameter versionTree: the version strings that indicate the sequence of model versions to be used as the order for progressive migrations. If not specified, will default to a non-migrating data stack.
+     */
+    @objc
+    public convenience init(modelName: String = DataStack.applicationName, bundle: NSBundle = NSBundle.mainBundle(), versionTree: [String: String]? = nil) {
+        
+        self.init(
+            DataStack(
+                modelName: modelName,
+                bundle: bundle,
+                migrationChain: versionTree.flatMap { MigrationChain($0) } ?? nil
+            )
+        )
+    }
+    
+    /**
+     Initializes a `DataStack` from an `NSManagedObjectModel`.
+     
+     - parameter model: the `NSManagedObjectModel` for the stack
+     - parameter versionChain: the `MigrationChain` that indicates the sequence of model versions to be used as the order for progressive migrations. If not specified, will default to a non-migrating data stack.
+     */
+    @objc
+    public convenience init(model: NSManagedObjectModel, versionChain: [String]? = nil) {
+        
+        self.init(
+            DataStack(
+                model: model,
+                migrationChain: versionChain.flatMap { MigrationChain($0) } ?? nil
+            )
+        )
+    }
+    
+    /**
+     Initializes a `DataStack` from an `NSManagedObjectModel`.
+     
+     - parameter model: the `NSManagedObjectModel` for the stack
+     - parameter versionTree: the `MigrationChain` that indicates the sequence of model versions to be used as the order for progressive migrations. If not specified, will default to a non-migrating data stack.
+     */
+    @objc
+    public convenience init(model: NSManagedObjectModel, versionTree: [String]? = nil) {
+        
+        self.init(
+            DataStack(
+                model: model,
+                migrationChain: versionTree.flatMap { MigrationChain($0) } ?? nil
+            )
+        )
+    }
+    
+    
+    // MARK: NSObject
+    
+    public override var hash: Int {
+        
+        return ObjectIdentifier(self.swift).hashValue
+    }
+    
+    public override func isEqual(object: AnyObject?) -> Bool {
+        
+        guard let object = object as? CSDataStack else {
+            
+            return false
+        }
+        return self.swift === object.swift
+    }
+    
+    
+    // MARK: CoreStoreBridge
+    
+    public let swift: DataStack
+    
+    public required init(_ swiftObject: DataStack) {
+        
+        self.swift = swiftObject
+    }
+}

Sources/ObjectiveC/CoreStoreBridge.swift

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+//
+//  CoreStoreBridge.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+
+public protocol CoreStoreBridge: class, AnyObject {
+    
+    associatedtype SwiftType
+    
+    var swift: SwiftType { get }
+    
+    init(_ swiftObject: SwiftType)
+}
+
+public protocol CoreStoreBridgeable: _ObjectiveCBridgeable {
+    
+    associatedtype NativeType: CoreStoreBridge
+}
+
+public extension CoreStoreBridgeable where NativeType.SwiftType == Self {
+    
+    static func _isBridgedToObjectiveC() -> Bool {
+        
+        return true
+    }
+    
+    static func _getObjectiveCType() -> Any.Type {
+        
+        return NativeType.self
+    }
+    
+    func _bridgeToObjectiveC() -> NativeType {
+        
+        return NativeType(self)
+    }
+    
+    static func _forceBridgeFromObjectiveC(source: NativeType, inout result: Self?) {
+        
+        result = source.swift
+    }
+    
+    static func _conditionallyBridgeFromObjectiveC(source: NativeType, inout result: Self?) -> Bool {
+        
+        self._forceBridgeFromObjectiveC(source, result: &result)
+        return true
+    }
+    
+    var objc: NativeType {
+        
+        return self._bridgeToObjectiveC()
+    }
+}